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Lee EY, Kulkarni RP. Circulating biomarkers predictive of tumor response to cancer immunotherapy. Expert Rev Mol Diagn 2019; 19:895-904. [PMID: 31469965 DOI: 10.1080/14737159.2019.1659728] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Introduction: The advent of checkpoint blockade immunotherapy has revolutionized cancer treatment, but clinical response to immunotherapies is highly heterogeneous among individual patients and between cancer types. This represents a challenge to oncologists when choosing specific immunotherapies for personalized medicine. Thus, biomarkers that can predict tumor responsiveness to immunotherapies before and during treatment are invaluable. Areas covered: We review the latest advances in 'liquid biopsy' biomarkers for noninvasive prediction and in-treatment monitoring of tumor response to immunotherapy, focusing primarily on melanoma and non-small cell lung cancer. We concentrate on high-quality studies published within the last five years on checkpoint blockade immunotherapies, and highlight significant breakthroughs, identify key areas for improvement, and provide recommendations for how these diagnostic tools can be translated into clinical practice. Expert opinion: The first biomarkers proposed to predict tumor response to immunotherapy were based on PD1/PDL1 expression, but their predictive value is limited to specific cancers or patient populations. Recent advances in single-cell molecular profiling of circulating tumor cells and host cells using next-generation sequencing has dramatically expanded the pool of potentially useful predictive biomarkers. As immunotherapy moves toward personalized medicine, a composite panel of both genomic and proteomic biomarkers will have enormous utility in therapeutic decision-making.
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Affiliation(s)
- Ernest Y Lee
- Department of Bioengineering, UCLA , Los Angeles , CA , USA.,Department of Dermatology, UCLA , Los Angeles , CA , USA.,UCLA-Caltech Medical Scientist Training Program, David Geffen School of Medicine at UCLA , Los Angeles , CA , USA
| | - Rajan P Kulkarni
- Department of Dermatology, OHSU , Portland , OR , USA.,Cancer Early Detection and Advanced Research Center (CEDAR), Knight Cancer Institute (KCI), OHSU , Portland , OR , USA.,Division of Operative Care, Portland VA Medical Center (PVAMC) , Portland , OR , USA
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2
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Li XD, Huang CW, Liu ZF, Jiang LJ, Chen JW, Xie D, Zhou FJ, Lu HM, Liu ZW. Prognostic Role of the Immunoscore for Patients with Urothelial Carcinoma of the Bladder Who Underwent Radical Cystectomy. Ann Surg Oncol 2019; 26:4148-4156. [DOI: 10.1245/s10434-019-07529-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Indexed: 01/19/2023]
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3
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Kerns SL, Chuang KH, Hall W, Werner Z, Chen Y, Ostrer H, West C, Rosenstein B. Radiation biology and oncology in the genomic era. Br J Radiol 2018; 91:20170949. [PMID: 29888979 PMCID: PMC6475928 DOI: 10.1259/bjr.20170949] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Revised: 06/01/2018] [Accepted: 06/05/2018] [Indexed: 12/25/2022] Open
Abstract
Radiobiology research is building the foundation for applying genomics in precision radiation oncology. Advances in high-throughput approaches will underpin increased understanding of radiosensitivity and the development of future predictive assays for clinical application. There is an established contribution of genetics as a risk factor for radiotherapy side effects. An individual's radiosensitivity is an inherited polygenic trait with an architecture that includes rare mutations in a few genes that confer large effects and common variants in many genes with small effects. Current thinking is that some will be tissue specific, and future tests will be tailored to the normal tissues at risk. The relationship between normal and tumor cell radiosensitivity is poorly understood. Data are emerging suggesting interplay between germline genetic variation and epigenetic modification with growing evidence that changes in DNA methylation regulate the radiosensitivity of cancer cells and histone acetyltransferase inhibitors have radiosensitizing effects. Changes in histone methylation can also impair DNA damage response signaling and alter radiosensitivity. An important effort to advance radiobiology in the genomic era was establishment of the Radiogenomics Consortium to enable the creation of the large radiotherapy cohorts required to exploit advances in genomics. To address challenges in harmonizing data from multiple cohorts, the consortium established the REQUITE project to collect standardized data and genotyping for ~5,000 patients. The collection of detailed dosimetric data is important to produce validated multivariable models. Continued efforts will identify new genes that impact on radiosensitivity to generate new knowledge on toxicity pathogenesis and tests to incorporate into the clinical decision-making process.
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Affiliation(s)
| | - Kuang-Hsiang Chuang
- Department of Radiation Oncology, University of Rochester Medical Center, Rochester, NY, USA
| | - William Hall
- Department of Radiation Oncology, Medical College of Wisconsin and Clement J Zablocki VA Medical Center Milwaukee, Milwaukee, WI, USA
| | | | - Yuhchyau Chen
- Department of Radiation Oncology, University of Rochester Medical Center, Rochester, NY, USA
| | - Harry Ostrer
- Departments of Pathology and Pediatrics, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Catharine West
- Division of Cancer Sciences, University of Manchester, Christie Hospital, Manchester, UK
| | - Barry Rosenstein
- Departments of Radiation Oncology, Genetics and Genomic Sciences, and Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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4
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Nardone V, Botta C, Caraglia M, Martino EC, Ambrosio MR, Carfagno T, Tini P, Semeraro L, Misso G, Grimaldi A, Boccellino M, Facchini G, Berretta M, Vischi G, Rocca BJ, Barone A, Tassone P, Tagliaferri P, Del Vecchio MT, Pirtoli L, Correale P. Tumor infiltrating T lymphocytes expressing FoxP3, CCR7 or PD-1 predict the outcome of prostate cancer patients subjected to salvage radiotherapy after biochemical relapse. Cancer Biol Ther 2017; 17:1213-1220. [PMID: 27791459 DOI: 10.1080/15384047.2016.1235666] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Tumor immunologic microenvironment is strongly involved in tumor progression and the presence of tumor infiltrating lymphocytes (TIL) with different phenotypes has been demonstrated to be of prognostic relevance in different malignancies. We investigated whether TIL infiltration of tumor tissues could also predict the outcome of prostate cancer patients. To this end, we carried out a retrospective analysis correlating the outcome of locally advanced prostate cancer patients undergone salvage radiotherapy upon relapse after radical surgery with the infiltration by different TIL populations. Twenty-two patients with resectable prostate cancer, with a mean age of 67 (+/-3.93) years, who received salvage radiotherapy with a mean of 69.66 (+/- 3.178) Gy in 8 weeks, between June 1999 and January 2009 and with a median follow up of 123 (+/- 55.82) months, were enrolled in this study. We evaluated, by immunohistochemistry, the intratumoral (t) and peripheral stroma (p) infiltration by CD45, CD3, CD4, CD8, CCR7, FoxP3 or PD-1-positive cells on tumor samples taken at the diagnosis (d) and relapse times (R). We correlated these variables with patients' biochemical progression free survival (bPFS), post-radiotherapy progression free survival (PFS), and overall survival (OS). Substantial changes in the rate of TIL subsets were found between the first and the second biopsy with progressive increase in CD4, CCR7, FoxP3, PD-1+ cells. Our analysis revealed that higher CD8p,R+ and lower PD-1R+ TIL scores correlated to a longer bPFS. Higher CD8p,R+ and CCR7t,R+ TIL scores and lower CD45p,R+ and FoxP3p,R+ TIL scores correlated to a prolonged PFS and OS. These results suggest that the immunological microenvironment of primary tumor is strictly correlated with patient outcome and provide the rationale for immunological treatment of prostate cancer.
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Affiliation(s)
- Valerio Nardone
- a Radiotherapy Unit, Department of Oncology , Siena University School of Medicine , Italy.,b Tuscany Tumor Institute (ITT) , Firenze , Italy
| | - Cirino Botta
- c Medical Oncology Unit, Department of Clinical and Experimental Medicine , "Magna Graecia" University of Catanzaro , Catanzaro , Italy
| | - Michele Caraglia
- d Department of Biochemistry , Biophysics and General Pathology, Second University of Naples , Naples , Italy
| | - Elodia Claudia Martino
- a Radiotherapy Unit, Department of Oncology , Siena University School of Medicine , Italy
| | - Maria Raffaella Ambrosio
- e Section of Pathology, Department of Medical Biotechnology , University of Siena , Siena , Italy
| | - Tommaso Carfagno
- a Radiotherapy Unit, Department of Oncology , Siena University School of Medicine , Italy.,b Tuscany Tumor Institute (ITT) , Firenze , Italy
| | - Paolo Tini
- a Radiotherapy Unit, Department of Oncology , Siena University School of Medicine , Italy.,b Tuscany Tumor Institute (ITT) , Firenze , Italy
| | - Leonardo Semeraro
- a Radiotherapy Unit, Department of Oncology , Siena University School of Medicine , Italy.,b Tuscany Tumor Institute (ITT) , Firenze , Italy
| | - Gabriella Misso
- d Department of Biochemistry , Biophysics and General Pathology, Second University of Naples , Naples , Italy
| | - Anna Grimaldi
- d Department of Biochemistry , Biophysics and General Pathology, Second University of Naples , Naples , Italy
| | - Mariarosaria Boccellino
- d Department of Biochemistry , Biophysics and General Pathology, Second University of Naples , Naples , Italy
| | - Gaetano Facchini
- f Urogynechological Department , INT Fondazione "G. Pascale " Naples , Italy
| | | | - Gianluca Vischi
- a Radiotherapy Unit, Department of Oncology , Siena University School of Medicine , Italy.,b Tuscany Tumor Institute (ITT) , Firenze , Italy
| | - Bruno Jim Rocca
- e Section of Pathology, Department of Medical Biotechnology , University of Siena , Siena , Italy.,h Pathology Unit , Ospedale di Circolo di Busto Arsizio (VA) Italy
| | - Aurora Barone
- e Section of Pathology, Department of Medical Biotechnology , University of Siena , Siena , Italy
| | - Pierfrancesco Tassone
- c Medical Oncology Unit, Department of Clinical and Experimental Medicine , "Magna Graecia" University of Catanzaro , Catanzaro , Italy
| | - Pierosandro Tagliaferri
- c Medical Oncology Unit, Department of Clinical and Experimental Medicine , "Magna Graecia" University of Catanzaro , Catanzaro , Italy
| | - Maria Teresa Del Vecchio
- e Section of Pathology, Department of Medical Biotechnology , University of Siena , Siena , Italy
| | - Luigi Pirtoli
- a Radiotherapy Unit, Department of Oncology , Siena University School of Medicine , Italy.,b Tuscany Tumor Institute (ITT) , Firenze , Italy
| | - Pierpaolo Correale
- a Radiotherapy Unit, Department of Oncology , Siena University School of Medicine , Italy.,b Tuscany Tumor Institute (ITT) , Firenze , Italy
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Abstract
Immunotherapy for castration-resistant prostate cancer has continued to be an area of active research over the last several years. The enthusiasm of this approach has been based on the assumption of better tolerability and that using the body's own immune system may be more effective than either hormonal or chemotherapy. Sipuleucel-T, a dendritic cell-based vaccine, is the only approved agent in this class for the management of castrate-resistant prostate cancer. Although sipuleucel-T increases overall survival without any significant changes in progression-free survival, other forms of immunotherapy such as PSA-TRICOM, ipilimumab, and chimeric antigen receptor T cell therapy are in advanced stages of clinical development. Immune biomarkers are being developed to assess response to these treatments and also to understand how the immune system responds to these respective therapies. Combinations of immunotherapy with androgen deprivation, radiation therapy, and chemotherapy have also been explored with varying results. This review discusses the mechanisms, key preclinical and clinical data, and perspectives for immunotherapeutic agents in the treatment scheme for castrate-resistant prostate cancer.
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6
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Johnson LE, Olson BM, McNeel DG. Pretreatment antigen-specific immunity and regulation - association with subsequent immune response to anti-tumor DNA vaccination. J Immunother Cancer 2017; 5:56. [PMID: 28716080 PMCID: PMC5514519 DOI: 10.1186/s40425-017-0260-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 06/23/2017] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Immunotherapies have demonstrated clinical benefit for many types of cancers, however many patients do not respond, and treatment-related adverse effects can be severe. Hence many efforts are underway to identify treatment predictive biomarkers. We have reported the results of two phase I trials using a DNA vaccine encoding prostatic acid phosphatase (PAP) in patients with biochemically recurrent prostate cancer. In both trials, persistent PAP-specific Th1 immunity developed in some patients, and this was associated with favorable changes in serum PSA kinetics. In the current study, we sought to determine if measures of antigen-specific or antigen non-specific immunity were present prior to treatment, and associated with subsequent immune response, to identify possible predictive immune biomarkers. METHODS Patients who developed persistent PAP-specific, IFNγ-secreting immune responses were defined as immune "responders." The frequency of peripheral T cell and B cell lymphocytes, natural killer cells, monocytes, dendritic cells, myeloid derived suppressor cells, and regulatory T cells were assessed by flow cytometry and clinical laboratory values. PAP-specific immune responses were evaluated by cytokine secretion in vitro, and by antigen-specific suppression of delayed-type hypersensitivity to a recall antigen in an in vivo SCID mouse model. RESULTS The frequency of peripheral blood cell types did not differ between the immune responder and non-responder groups. Non-responder patients tended to have higher PAP-specific IL-10 production pre-vaccination (p = 0.09). Responder patients had greater preexisting PAP-specific bystander regulatory responses that suppressed DTH to a recall antigen (p = 0.016). CONCLUSIONS While our study population was small (n = 38), these results suggest that different measures of antigen-specific tolerance or regulation might help predict immunological outcome from DNA vaccination. These will be prospectively evaluated in an ongoing randomized, phase II trial.
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Affiliation(s)
- Laura E Johnson
- University of Wisconsin Carbone Cancer Center, 7007 Wisconsin Institutes for Medical Research, University of Wisconsin, Madison, 1111 Highland Avenue, Madison, WI, 53705, USA
| | - Brian M Olson
- University of Wisconsin Carbone Cancer Center, 7007 Wisconsin Institutes for Medical Research, University of Wisconsin, Madison, 1111 Highland Avenue, Madison, WI, 53705, USA
| | - Douglas G McNeel
- University of Wisconsin Carbone Cancer Center, 7007 Wisconsin Institutes for Medical Research, University of Wisconsin, Madison, 1111 Highland Avenue, Madison, WI, 53705, USA.
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7
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Vlachostergios PJ, Galletti G, Palmer J, Lam L, Karir BS, Tagawa ST. Antibody therapeutics for treating prostate cancer: where are we now and what comes next? Expert Opin Biol Ther 2016; 17:135-149. [DOI: 10.1080/14712598.2017.1258398] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
| | - Giuseppe Galletti
- Division of Hematology and Medical Oncology, Weill Cornell Medicine, New York, NY, USA
- Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
| | - Jessica Palmer
- Division of Hematology and Medical Oncology, Weill Cornell Medicine, New York, NY, USA
| | - Linda Lam
- Division of Hematology and Medical Oncology, Weill Cornell Medicine, New York, NY, USA
| | - Beerinder S. Karir
- Division of Hematology and Medical Oncology, Weill Cornell Medicine, New York, NY, USA
| | - Scott T. Tagawa
- Division of Hematology and Medical Oncology, Weill Cornell Medicine, New York, NY, USA
- Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
- Department of Urology, Weill Cornell Medicine, New York, NY, USA
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8
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Saranchova I, Han J, Huang H, Fenninger F, Choi KB, Munro L, Pfeifer C, Welch I, Wyatt AW, Fazli L, Gleave ME, Jefferies WA. Discovery of a Metastatic Immune Escape Mechanism Initiated by the Loss of Expression of the Tumour Biomarker Interleukin-33. Sci Rep 2016; 6:30555. [PMID: 27619158 PMCID: PMC5020406 DOI: 10.1038/srep30555] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 06/27/2016] [Indexed: 01/03/2023] Open
Abstract
A new paradigm for understanding immune-surveillance and immune escape in cancer is described here. Metastatic carcinomas express reduced levels of IL-33 and diminished levels of antigen processing machinery (APM), compared to syngeneic primary tumours. Complementation of IL-33 expression in metastatic tumours upregulates APM expression and functionality of major histocompatibility complex (MHC)-molecules, resulting in reduced tumour growth rates and a lower frequency of circulating tumour cells. Parallel studies in humans demonstrate that low tumour expression of IL-33 is an immune biomarker associated with recurrent prostate and kidney renal clear cell carcinomas. Thus, IL-33 has a significant role in cancer immune-surveillance against primary tumours, which is lost during the metastatic transition that actuates immune escape in cancer.
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Affiliation(s)
- Iryna Saranchova
- The Michael Smith Laboratories, University of British Columbia, 301-2185 East Mall, Vancouver, BC Canada V6T 1Z4.,Department of Microbiology &Immunology, University of British Columbia, 1365 - 2350 Health Sciences Mall, Vancouver, BC Canada V6T 1Z3
| | - Jeffrey Han
- The Michael Smith Laboratories, University of British Columbia, 301-2185 East Mall, Vancouver, BC Canada V6T 1Z4.,Department of Microbiology &Immunology, University of British Columbia, 1365 - 2350 Health Sciences Mall, Vancouver, BC Canada V6T 1Z3
| | - Hui Huang
- The Michael Smith Laboratories, University of British Columbia, 301-2185 East Mall, Vancouver, BC Canada V6T 1Z4.,Department of Microbiology &Immunology, University of British Columbia, 1365 - 2350 Health Sciences Mall, Vancouver, BC Canada V6T 1Z3
| | - Franz Fenninger
- The Michael Smith Laboratories, University of British Columbia, 301-2185 East Mall, Vancouver, BC Canada V6T 1Z4.,Department of Microbiology &Immunology, University of British Columbia, 1365 - 2350 Health Sciences Mall, Vancouver, BC Canada V6T 1Z3
| | - Kyung Bok Choi
- The Michael Smith Laboratories, University of British Columbia, 301-2185 East Mall, Vancouver, BC Canada V6T 1Z4
| | - Lonna Munro
- The Michael Smith Laboratories, University of British Columbia, 301-2185 East Mall, Vancouver, BC Canada V6T 1Z4
| | - Cheryl Pfeifer
- The Michael Smith Laboratories, University of British Columbia, 301-2185 East Mall, Vancouver, BC Canada V6T 1Z4
| | - Ian Welch
- Department of Animal Care Services, University of British Columbia, 4145 Wesbrook Mall, Vancouver BC Canada V6T 1W5
| | - Alexander W Wyatt
- Department of Urologic Sciences, University of British Columbia Gordon &Leslie Diamond Health Care Centre, Level 6, 2775 Laurel Street, Vancouver, BC Canada V5Z 1M9.,The Vancouver Prostate Centre, University of British Columbia 2660 Oak Street, Vancouver, BC Canada V6H 3Z6
| | - Ladan Fazli
- Department of Urologic Sciences, University of British Columbia Gordon &Leslie Diamond Health Care Centre, Level 6, 2775 Laurel Street, Vancouver, BC Canada V5Z 1M9.,The Vancouver Prostate Centre, University of British Columbia 2660 Oak Street, Vancouver, BC Canada V6H 3Z6
| | - Martin E Gleave
- Department of Urologic Sciences, University of British Columbia Gordon &Leslie Diamond Health Care Centre, Level 6, 2775 Laurel Street, Vancouver, BC Canada V5Z 1M9.,The Vancouver Prostate Centre, University of British Columbia 2660 Oak Street, Vancouver, BC Canada V6H 3Z6
| | - Wilfred A Jefferies
- The Michael Smith Laboratories, University of British Columbia, 301-2185 East Mall, Vancouver, BC Canada V6T 1Z4.,Department of Microbiology &Immunology, University of British Columbia, 1365 - 2350 Health Sciences Mall, Vancouver, BC Canada V6T 1Z3.,Department of Medical Genetics, University of British Columbia 1364 - 2350 Health Sciences Mall, Vancouver, BC Canada V6T 1Z3.,Department of Zoology, University of British Columbia 4200 - 6270 University Blvd, Vancouver, BC Canada V6T 1Z4.,Centre for Blood Research at the University of British Columbia 4th Floor - 2350 Health Sciences Mall, Vancouver, BC Canada V6T 1Z3.,Djavad Mowafaghian Centre for Brain Health at the University of British Columbia 2215 Wesbrook Mall, Vancouver BC Canada V6T 1Z3
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9
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Aragon-Ching JB, Trump DL. Systemic therapy in muscle-invasive and metastatic bladder cancer: current trends and future promises. Future Oncol 2016; 12:2049-58. [DOI: 10.2217/fon-2016-0155] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Bladder urothelial cancers remain an important urologic cancer with limited treatment options in the locally advanced and metastatic setting. While neoadjuvant chemotherapy for locally advanced muscle-invasive cancers has shown overall survival benefit, clinical uptake in practice have lagged behind. Controversies surrounding adjuvant chemotherapy use are also ongoing. Systemic therapies for metastatic bladder cancer have largely used platinum-based therapies without effective standard second-line therapy options for those who fail, although vinflunine is approved in Europe as a second-line therapy based on a Phase III trial, and most recently, atezolizumab, a checkpoint inhibitor, was approved by the US FDA. Given increasing recognition of mutational signatures expressed in urothelial carcinomas, several promising agents with use of VEGF-targeted therapies, HER2-directed agents and immunotherapies with PD-1/PD-L1 antibodies in various settings are discussed herein.
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10
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Gudkov SV, Shilyagina NY, Vodeneev VA, Zvyagin AV. Targeted Radionuclide Therapy of Human Tumors. Int J Mol Sci 2015; 17:E33. [PMID: 26729091 PMCID: PMC4730279 DOI: 10.3390/ijms17010033] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2015] [Revised: 12/07/2015] [Accepted: 12/22/2015] [Indexed: 12/12/2022] Open
Abstract
Targeted radionuclide therapy is one of the most intensively developing directions of nuclear medicine. Unlike conventional external beam therapy, the targeted radionuclide therapy causes less collateral damage to normal tissues and allows targeted drug delivery to a clinically diagnosed neoplastic malformations, as well as metastasized cells and cellular clusters, thus providing systemic therapy of cancer. The methods of targeted radionuclide therapy are based on the use of molecular carriers of radionuclides with high affinity to antigens on the surface of tumor cells. The potential of targeted radionuclide therapy has markedly grown nowadays due to the expanded knowledge base in cancer biology, bioengineering, and radiochemistry. In this review, progress in the radionuclide therapy of hematological malignancies and approaches for treatment of solid tumors is addressed.
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Affiliation(s)
- Sergey V Gudkov
- Laboratory of Optical Theranostics, Lobachevsky Nizhny Novgorod State University, Gagarin Ave. 23, Nizhny Novgorod 603950, Russia.
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Institutskaya St, 3, Pushchino, Moscow 142290, Russia.
- Prokhorov Institute of General Physics, Russian Academy of Sciences, Vavilova St, 38, Moscow 119991, Russia.
| | - Natalya Yu Shilyagina
- Laboratory of Optical Theranostics, Lobachevsky Nizhny Novgorod State University, Gagarin Ave. 23, Nizhny Novgorod 603950, Russia.
| | - Vladimir A Vodeneev
- Laboratory of Optical Theranostics, Lobachevsky Nizhny Novgorod State University, Gagarin Ave. 23, Nizhny Novgorod 603950, Russia.
| | - Andrei V Zvyagin
- Laboratory of Optical Theranostics, Lobachevsky Nizhny Novgorod State University, Gagarin Ave. 23, Nizhny Novgorod 603950, Russia.
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Macquarie University, Sydney 2109, Australia.
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11
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Abstract
Prostate cancer is the second most diagnosed cancer in men and current treatment of advanced prostate cancer is ineffective. Immunotherapy has emerged as a promising treatment option for metastatic prostate cancer but its clinical application is still in the early stages of development. In order to treat metastatic prostate tumors, new directions must be taken to improve current immunotherapeutic strategies. These include the identification of effective tumor antigens (Ags), the induction of the HLA class II pathway for Ag processing and CD4+ T cell activation, and the ability of tumor cells to act like Ag presenting cells. In this review, we suggest a model for tumor Ag selection, epitope modification and self-processing for presentation by class II proteins as a means of restoring immune activation and tumor clearance. We also outline the importance of a Gamma-IFN-inducible Lysosomal Thiol reductase (GILT) in Ag and modified peptide processing by tumor cells, generation of functional epitopes for T cell recognition, and inclusion of immune checkpoint blockers in cancer immunotherapy. Taken together, this review provides a framework for the future development of novel cancer vaccines and the improvement of existing immunotherapeutics in prostate cancer.
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Affiliation(s)
- Bently P Doonan
- Department of Microbiology and Immunology, and Hollings Cancer Center, Medical University of South Carolina, 173 Ashley Avenue, Charleston, SC 29425, USA
| | - Azizul Haque
- Department of Microbiology and Immunology, and Hollings Cancer Center, Medical University of South Carolina, 173 Ashley Avenue, Charleston, SC 29425, USA
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